Answered: A Coiled telephone cord forms a spiral… | bartleby

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A Coiled telephone cord torms a Spiral, with
51-0 tums, la diameter of 1-30cm, and an unstretched
G
length of 63.5 cm. Determine the inductance of
une conductor in the unstret hed Lord G 2!
Note: Answer must be in MA...
SEL

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plz help Inductive battery chargers, which allow transfer of electrical power without the need for exposed electrical contacts, are commonly used in appliances that need to be safely immersed in water, such as electric toothbrushes. Consider the following simple model for the power transfer in an inductive charger (see the figure).(Figure 1) Within the charger's plastic base, a primary coil of diameter ddd with nPnP turns per unit length is connected to a home's ac wall outlet so that a current I=I0sin(2πft)I=I0sin(2πft) flows within it. When the toothbrush is seated on the base, an NNN-turn secondary coil inside the toothbrush has a diameter only slightly greater than ddd and is centered on the primary. Find an expression for the emf induced in the secondary coil. [This induced emf recharges the battery.] Express your answer in terms of the variables ddd, nPnPn_P, I0I0I_0, fff, ttt, NNN, and appropriate constants.
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when i turned in my work i got these questions wrong , i need help solving them please
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